JPH08217075A - Plastic bottle with grip - Google Patents

Abstract

PURPOSE: To sufficiently secure the fitting strength of a grip, by forming at least two fitting parts in the peripheral direction of a bottle, in the plastic bottle in which a separate grip is fixed to recessed for fitting the grip, formed on the bottle body. CONSTITUTION: A bottle body 1 is made of a polyester resin by use of biaxial orientation blow molding and a recess 2 for fixing a grip is formed at the side face thereof. As the shape of the recess 2 for fixing the grip, such a shape caught from the side face into the inside or cut off from the upper side by a vertical face 21 is defined. The grip 3 is fixed to the recess 2 and constituted of a gripping part 31 extending to the right angled direction against the vertical axis 1A of the bottle body 1 and a fitting part 32 laterally projecting from both ends of gripping part 31. A swelled fixing part 33 provided at the front end of the fitting part 32 is formed so as to be enveloped by the bottle wall face 71 in order to fix the grip.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plastic bottle in which a handle which is separate from the bottle body is attached.

[0002]

2. Description of the Related Art Since plastic bottles become inconvenient to handle when they are large, plastic handles such as polyester, which are difficult to form, are attached to the plastic bottle. Things are becoming widely used.

In order to attach the handle to the bottle body, for example, a synthetic resin such as polypropylene or polyethylene which is excellent in moldability and price is used, and the handle is separately molded by an injection molding method in advance. Set in the molding die, blow a fluid into the heated parison and blow mold this to form into a bottle, and wrap the locking part of the handle with the wall surface of the bottle, and then attach it. Has been converted.

[0004] The position of the mounting portion has been set at two positions above and below the handle or at one position in the center of the handle.

[0005]

However, in the conventional bottles described above, when the mounting portions are provided at two positions above and below the handle, the timing and the degree of stretching are different between the upper and lower mounting portions during blow molding, so that the wall surface of the bottle is When the handle is mounted so as to wrap around the locking portion of the handle, the attachment strength between the wall surface of the bottle and the handle tends to be uneven.

Further, if the handle is provided at one place in the center, the attachment strength of the handle may be insufficient in practical use.

[0007]

DISCLOSURE OF THE INVENTION The present invention is to provide a plastic bottle with a handle which solves the above-mentioned problems, and its gist is to provide a separate handle in a handle mounting recess formed in the bottle body. A plastic bottle with a handle, characterized in that at least two mounting portions for the handle are formed in the circumferential direction of the bottle. The present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a front view showing an example of the plastic bottle with a handle of the present invention, FIG. 2 is a sectional view taken along line II--II of FIG. 1, and FIG.
Is a sectional front view for explaining a state in the middle of manufacturing another example of the plastic bottle with a handle of the present invention, and FIG.
It is an IV sectional view.

As shown in FIGS. 1 to 4, the present invention is a plastic bottle in which a separate handle 3 is mounted in a handle mounting recess 2 formed in a bottle body 1, and the mounting portion 4 of the handle 3 is a bottle. It is a plastic bottle with a handle characterized in that it is formed at least at two locations in the circumferential direction.

The bottle body 1 is preferably a biaxially stretched blow-molded bottle made of a polyester resin such as polyethylene terephthalate and having a handle mounting recess 2 formed on the side surface thereof.

As for the shape of the handle mounting recess 2, it may have a shape that digs in from the side as in the example shown in FIG. 1, or as shown in FIG.
It may have a shape notched by. In addition, the handle mounting recess 2
The vertical surface 21 may be flat as in the examples of FIGS. 1 and 2, or the uneven ribs 11 may be formed as in the examples of FIGS. 3 and 4 to reinforce by the rib effect and the stretching effect.

As the handle 3, in addition to polypropylene and polyethylene, an injection-molded article made of the same polyester resin as that of the bottle body can be used. Particularly, the article made of polyester resin has an advantage that it can be recycled together with the bottle body. Therefore, it is preferable.

In the example shown in FIGS. 1 to 4, the handle 3 has a grip portion 31 extending in a direction perpendicular to the vertical axis 1A of the bottle body 1, that is, a horizontal direction, and a fitting protruding laterally from both ends of the grip portion 31. The fitting portion 32 has a U shape as a whole, and a bulging locking portion 33 is provided at the tip of the fitting portion 32.

The mounting portion 4 of the handle 3 is fitted to the fitting portion 32 of the handle 3.
The locking portion 33 at the tip is configured to be wrapped by the bottle wall surface 71, and at least 2 in the circumferential direction of the bottle.
Need to be formed in some places.

At least two mounting portions 4 are provided in the circumferential direction of the bottle.
The grip portion 31 that extends in the horizontal direction due to the formation in places
Is easy to form, and since the grip 31 is horizontal, the grip 31
Since the bottom part 12 of the bottle body 1 can be supported by both hands, it is particularly easy to handle in the case of a large-capacity bottle, and the mounting strength is uniform and sufficient.

The reason why the mounting strength is uniform and sufficient can be obtained as follows.

As shown in FIGS. 3 and 4, the plastic handle 3 which is manufactured in advance by injection molding is set in the bottle body molding die 6 so that the locking portion 33 projects to the inner surface of the die 6. Every, molding temperature, generally 95-115
A fluid is blown into the parison 7 heated to ℃, and blow molding is performed to form the bottle main body. As the molding progresses, the bottle wall surface 71 wraps the locking portion 33 of the handle 3 and the handle 3 is attached. It

At this time, since the mounting portion 4 is formed at least at two places in the circumferential direction of the bottle, the mounting portion 4 is moved from the parison 7 to the mounting portion 4.
Since the bottle wall surfaces 71 that have almost the same distance to each other and move with the progress of molding reach the two locking portions 33 of the handle 3 and the degree of stretching is uniform, the bottle wall surface 71 is wrapped uniformly. It is considered that the attachment strength is uniform and sufficient.

[0019]

According to the present invention, in a plastic bottle in which a separate plastic handle is mounted in the handle mounting recess formed in the bottle body, the handle mounting portions are formed at least at two positions in the circumferential direction of the bottle. Since it is a plastic bottle with a handle, the wall surface of the bottle can be evenly and sufficiently wrapped around the locking part of the handle,
There is an effect that the inconvenience that the locking portion is deformed or the fitting of the handle is insufficient can be solved, and the mounting strength of the handle can be sufficiently secured.

[Brief description of drawings]

FIG. 1 is a front view showing an example of a plastic bottle with a handle according to the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a sectional front view for explaining a state in the middle of manufacturing another example of the plastic bottle with a handle of the present invention.

4 is a sectional view taken along the line IV-IV in FIG.

[Explanation of symbols]

 1 Bottle body 2 Handle mounting recess 3 Handle 4 mounting part

Claims (1)

[Claims] 1. A plastic bottle in which a separate handle is attached to a handle attachment recess formed in the bottle body, wherein the attachment part of the handle is at least 2 in the circumferential direction of the bottle.
Plastic bottle with handle characterized by being formed in places.